銅の熔接硬化に関する研究 (第1報) : 冷却速度の測定

概要

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As the first part of studies on the weld hardening of heat affected zone in high tensile steels, the effects of various factors on the cooling rate at the bond of a long bead were investigated experimentally by measuring the heating and cooling thermal cycle with thermocouples. The accuracy and the reproducibility of measurement were first discussed, and the studied factors included the location of thermocouple, size and thickness of specimen, initial plate temperature, heat input (welding current and welding speed), as well as the type of electrode coating. The effects of various factors, namely temperature (T), initial plate temperature (T_0), welding current (l), welding speed (v), and plate thickness (t) on the cooling rates at the bond of a long bead welded on a plate were found to be summarized with an experimental parameter, P : P ≡ ((T - T_0)/(I/υ))^<1.7> x (1 + 2/π tan^<-1> (t - to)/ a). t_0, a : constant.
社団法人溶接学会の論文
1957-02-25